# -*- coding: utf-8; -*-
#
# This file is part of Superdesk.
#
# Copyright 2013, 2014, 2015, 2016, 2017 Sourcefabric z.u. and contributors.
#
# For the full copyright and license information, please see the
# AUTHORS and LICENSE files distributed with this source code, or
# at https://www.sourcefabric.org/superdesk/license
import logging
from datetime import timedelta
from copy import deepcopy

from superdesk.tests import TestCase
from superdesk import get_resource_service
from superdesk.utc import utcnow

from ..commands.remove_expired_items import RemoveExpiredItems

logger = logging.getLogger(__name__)

utc = utcnow()
expired = utc - timedelta(days=10)
not_expired = utc - timedelta(days=1)
items = [
    {"_id": "1", "_updated": not_expired, "type": "text"},  # Single item, not expired
    {"_id": "2", "_updated": expired, "type": "text"},  # Single item, expired
    # Evolved from: parent expired, child not expired
    {"_id": "3", "_updated": expired, "type": "text"},
    {"_id": "4", "_updated": not_expired, "type": "text", "evolvedfrom": "3", "ancestors": ["3"]},
    # Evolved from: parent expired, child expired
    {"_id": "5", "_updated": expired, "type": "text"},
    {"_id": "6", "_updated": expired, "type": "text", "evolvedfrom": "5", "ancestors": ["5"]},
    # Multi-branch evolved from,
    {"_id": "7", "_updated": expired, "type": "text"},
    {"_id": "8", "_updated": expired, "type": "text", "evolvedfrom": "7", "ancestors": ["7"]},
    {"_id": "9", "_updated": not_expired, "type": "text", "evolvedfrom": "8", "ancestors": ["7", "8"]},
    # Multi-branch evolved from
    {"_id": "10", "_updated": expired, "type": "text"},
    {"_id": "11", "_updated": expired, "type": "text", "evolvedfrom": "10", "ancestors": ["10"]},
    {"_id": "12", "_updated": expired, "type": "text", "evolvedfrom": "11", "ancestors": ["10", "11"]},
]

can_expire = [
    "2",  # Single item, expired
    "5",
    "6",  # Evolved from, parent expired, child expired
    "10",
    "11",
    "12",  # Multi-branch evolved from
]


class RemoveExpiredItemsTest(TestCase):
    def setUp(self):
        self.app.data.insert("items", deepcopy(items))
        self.command = RemoveExpiredItems()
        self.command.expiry_days = 8
        self.now = utcnow()

    def _get_items(self):
        return list(get_resource_service("capi_items_internal").get(req=None, lookup=None))

    def test_remove_expired_items(self):
        self.command._remove_expired_items(self.now, self.command.expiry_days)
        items = self._get_items()

        self.assertEqual(len(items), 6)
        for item in items:
            self.assertNotIn(item["_id"], can_expire)

    def test_get_expired_chain(self):
        items_service = get_resource_service("items")
        for item in self._get_items():
            if self.command._get_expired_chain(items_service, item, self.now):
                self.assertTrue(item["_id"] in can_expire)
            else:
                self.assertFalse(item["_id"] in can_expire)

    def test_run(self):
        self.command.run(self.command.expiry_days)
        items = self._get_items()

        self.assertEqual(len(items), 6)
        for item in items:
            self.assertNotIn(item["_id"], can_expire)

    def test_has_expired(self):
        has_expired = self.command._has_expired(deepcopy(items[1]), self.now)
        self.assertTrue(has_expired)

        has_expired = self.command._has_expired(deepcopy(items[0]), self.now)
        self.assertFalse(has_expired)

    def test_get_children(self):
        service = get_resource_service("items")
        children = self.command._get_children(service, items[0])
        self.assertEqual(children, [])

        children = [child["_id"] for child in self.command._get_children(service, items[2])]
        self.assertEqual(children, ["4"])

        children = [child["_id"] for child in self.command._get_children(service, items[9])]
        self.assertEqual(children, ["11", "12"])
